School of Music and the Moores School of Music. Houston Grand Opera performs at least one free show each summer at the Miller Outdoor Theatre. For classical choral music, Houston has several active groups, including Cantare Houston, the Houston Boychoir, Houston Ebony Music Society (also known as the Houston Ebony Opera Guild) and the Grammy Award-winning Houston Chamber Choir. The city is also home to one of the finest collegiate choral ensembles in the country, the UH Moores School of Music Concert Chorale. Pop As long as there's been popular music in America, there have been musicians who grew and developed in Houston contributing their own brand to the American cultural milieu. Pop icons from Houston include Hilary Duff, R&B singers Solange and Beyoncé, rockers ZZ Top, country legend Kenny Rogers, blues master Lightnin' Hopkins, tejano superstar Selena and the folksy country songwriter Lyle Lovett, among hundreds of others. Blues Blues music developed throughout the Southern United States where several areas developed distinctive regional sounds. Houston's distinctive sound grew in the 1920 with early influencers like Lightnin' Hopkins and T-Bone Walker. The sound matured over the next 50 years, during which it became known as Texas blues. The style would gain international notoriety in the modern era when it was adopted by popular regional rockers Stevie Ray Vaughan and ZZ Top, among others. Tejano Tejano is perhaps the most misunderstood of popular Houston musical styles because it is often classified as a style of Latin music, although the word "tejano" means Texan, reflecting the genre's roots in southern and central Texas during the 19th century. Modern Tejano music is usually a fusion style, combining the common historical elements of conjunto styles based around the accordion and bajo sexto with popular American styles --- most often country, R&B or rock. Within tejano music, Houston forged a distinctively modern sound that began with pop and rock fusions using electronic keyboards and synthesizers. The style was popularized in the 1980s and 1990s by the Grammy-award-winning Houston tejano band La Mafia, but which was thrust into a national and international spotlight by young female performer Selena. Selena's younger brother, A.B. Quintanilla, through his band Kumbia Kings would further push the Houston style of tejano even further by fusing it with hip-hop to create songs that appealed to a younger, more urban audience. Hip-hop Ben Westhoff, author of Dirty South: Outkast, Lil Wayne, Soulja Boy,